Hyundai Trajet needs this extra device to be read because they are using old Mitsubishi ECU while our new Accent uses Bosch ECU.

Checking my vesion of ECU, too bad is not available because my ECU version abit odd, but still sourcable.

The OBD1 port of my car is the same port KBSC uses to connect to their readers.

Well, so far whether it works or not I can't elaborate much because I haven't tune mine, unless someone sponsor me lah... _________________.: Safety, Handling and Performance - The Art Cycle of Car Modifications :.

Last edited by david on Thu Jun 29, 2006 3:32 pm; edited 2 times in total

For cars that are completely stock standard we will most likely upload a pre-programmed tuning program because it will be optimally tuned already but for cars with modifications we will reprogram according to what is already installed in the car to make sure that the program will bring out the maximum potential of the modification.

For exhaust modifications and grouding and other simple items, the stage 1 tuning is enough. If you have put in open pod filters and done port and polish plus performance cams, we will do more extensive checking before we tune the car.

can we roughly know the new max output of bhp and torque and their respective rpm of our engine after tuning? standard one is 89bhp/91ps @ 5500rpm and 13.2kgm/129Nm torque @ 3000rpm if not mistaken. if it's possible can autosyn show us the new output curve of d engine after tuning?

can we roughly know the new max output of bhp and torque and their respective rpm of our engine after tuning? standard one is 89bhp/91ps @ 5500rpm and 13.2kgm/129Nm torque @ 3000rpm if not mistaken. if it's possible can autosyn show us the new output curve of d engine after tuning?

I currently don't have a dyno chart for Accent but got dyno chart for GEtz and Elantra. you can check out my website for more info. www.automotivesynergy.com.

You can expect the power to increase to 90+bhp or around 10% for stage 1 remap. The power gains will be on wheel rather than on crank. The dyno chart is also not 100% reflective of the results. The owner of the car who drives it daily will know the difference immediately. I will bring my car to let you guys test drive.

can you explain why tuning the ECU will have on the wheel improvement but not the crank?

ECU tuning can give you power on wheel and on crank. If I give you results based on crank it is a waste of time because if you gain 20% power on crank you will still lose 25% through the gearbox.
True power gains that you can feel are measured by power gains on wheel. meaning that the power gain is after passing through the gearbox.

Manual gearboxes will lose around 15% to 18% efficiency whereas for auto you will lose 25% to 30%.

meaning the ECU tuning also tune the control of the gear?
thats why the power gain can be passed to wheel from crank?

autosyn wrote:

david wrote:

can you explain why tuning the ECU will have on the wheel improvement but not the crank?

ECU tuning can give you power on wheel and on crank. If I give you results based on crank it is a waste of time because if you gain 20% power on crank you will still lose 25% through the gearbox.
True power gains that you can feel are measured by power gains on wheel. meaning that the power gain is after passing through the gearbox.

Manual gearboxes will lose around 15% to 18% efficiency whereas for auto you will lose 25% to 30%.

meaning the ECU tuning also tune the control of the gear?
thats why the power gain can be passed to wheel from crank?

autosyn wrote:

david wrote:

can you explain why tuning the ECU will have on the wheel improvement but not the crank?

ECU tuning can give you power on wheel and on crank. If I give you results based on crank it is a waste of time because if you gain 20% power on crank you will still lose 25% through the gearbox.
True power gains that you can feel are measured by power gains on wheel. meaning that the power gain is after passing through the gearbox.

Manual gearboxes will lose around 15% to 18% efficiency whereas for auto you will lose 25% to 30%.

david,
The auto gearbox is controlled by the gearbox ECU. The ECU we retune does not control the gear box ECU. How we calculate the power gains is from power given out at the wheels.

For example if someone says they give you 20bhp more on crank from the original 100bhp. The gain is suppose to be 20% but if you look at the original power after the gearbox on wheel is only 100bhp less 20% which is only 80bhp. So if you add the 20bhp after a modification which will be 120bhp, take out 20% you will have only 96bhp. the total gain is only 16 bhp.
For on wheel calculations, 20bhp is a lot. so if the car has 20bhp increase on wheel, you will be gaining a more than 20% on crank. (close to 25% on crank).

so remember that if someone gives you a figure saying that he has 200bhp car, but the power is on crank.. it really means that he has only around 160 to 170bhp on wheel. A guy with a car with 180bhp on wheel is still going more power that the first guy.

When we say we give you 10% to 12% power increase on wheel, it is real power that you will really notice. Even with 10% gain on crank you will still be able to feel.

thanks for the explanation, but since i am not completely understanding all, but i think i got a point here.

autosyn wrote:

david wrote:

meaning the ECU tuning also tune the control of the gear?
thats why the power gain can be passed to wheel from crank?

autosyn wrote:

david wrote:

can you explain why tuning the ECU will have on the wheel improvement but not the crank?

ECU tuning can give you power on wheel and on crank. If I give you results based on crank it is a waste of time because if you gain 20% power on crank you will still lose 25% through the gearbox.
True power gains that you can feel are measured by power gains on wheel. meaning that the power gain is after passing through the gearbox.

Manual gearboxes will lose around 15% to 18% efficiency whereas for auto you will lose 25% to 30%.

david,
The auto gearbox is controlled by the gearbox ECU. The ECU we retune does not control the gear box ECU. How we calculate the power gains is from power given out at the wheels.

For example if someone says they give you 20bhp more on crank from the original 100bhp. The gain is suppose to be 20% but if you look at the original power after the gearbox on wheel is only 100bhp less 20% which is only 80bhp. So if you add the 20bhp after a modification which will be 120bhp, take out 20% you will have only 96bhp. the total gain is only 16 bhp.
For on wheel calculations, 20bhp is a lot. so if the car has 20bhp increase on wheel, you will be gaining a more than 20% on crank. (close to 25% on crank).

so remember that if someone gives you a figure saying that he has 200bhp car, but the power is on crank.. it really means that he has only around 160 to 170bhp on wheel. A guy with a car with 180bhp on wheel is still going more power that the first guy.

When we say we give you 10% to 12% power increase on wheel, it is real power that you will really notice. Even with 10% gain on crank you will still be able to feel.